Mining machine



1938. D. R. MCCULLOUGH 2,127,066

MINING MACHiNE Filed Aug. 25, 1936 3 Sheets-Sheet l A iiomeys I Aug. 16,1938.

4 D. R. M CULLOUGH 2,127,066

MINING MACHINE Filed Aug. 25, 1936 3 Sheets-Sheet 2 64 5 34 InvenforFa/W4 R M fa/1011 910 Aitorney Patented Aug. 16, 1938 ZJZLQBG PATENTOFFICE IVIINING David R. McCullough, Lost of one-third to William Nebr.

Application August 25,

4 Claims.

This invention relates to mining machines and an object of the inventionis to provide a mining machine particularly adapted for use in miningcoal.

A further object of the invention is to provide a mining machineparticularly adapted for the undercutting of the coal within the mine.

The invention together with its objects and advantages will be bestunderstood from a study of the following description taken in connectionwith the accompanying drawings, wherein Figure 1 is a top plan view ofthe machine showing the conveyors and saws associated therewith.

Figure 2 is a detail view showing certain parts in section andillustrating particularly the manner of anchoring the runners at thedesired position within the mine.

Figure 3 is a front elevational view of the carriage with the tools andother parts omitted.

Figure 4 is a rear elevational view of the carriage.

Figures 5 and 6 are detail sectional views taken substantially on thelines 5-5 and 66, respectively of Figure 1.

Figure '7 is a plan view of one of the end bearmgs.

Figure 8 is a plan view of the ball equipped end of an adjusting screw.

Figure 9 is a sectional view through the saw.

Figure 10 is a transverse sectional view through the saw and taken atright angles to Figure 9.

Figure 11 is a detail sectional view taken substantially on the line il-l I of Figure 1.

Figure 12 is an elevational view of the coal cutting bit.

Figure 13 is a similar view of a conveyor auger.

Referring to the drawings by reference it will be seen that the miningtool comprises a pair of runners 5-5 formed of strap metal turned up attheir respective opposite ends, or of some other suitable material.

The runners 5 are respectively provided at their respective oppositeends with holes 6.

A transverse bar 1 is adapted to extend between the runners 5 at eitherend of the runners and at its respective opposite ends the bar I isprovided with openings alined with the openings 6 to accommodate thespikes 8 provided on the 50 tubular sections 9 of a pair of anchoringjacks indicated by the reference numeral In.

As shown in Figure 2 each of the jacks In include the aforementionedlower tubular section 9 which is interiorly threaded to receive the 55threaded end of a rod section ll that is provided MACHINE Spring, Wy0.,assignor 0. Widger, Harrison,

1936, Serial No. 97,820 (01. 262-25) on its free end with a head l2having an anchoring spike l3 integral therewith and adapted to be driveninto the top wall or ceiling 1.4 of the mine as shown. Thus through themedium of the jacks [0 the runners 5 and bar I are secured in assembledrelation and the runners 5 held at the desired position within the mine.

Extending between the runners 5 is a slide indicated generally by thereference numeral [5 and the slide I5 is adapted to be shiftedlongitudinally with respect to the runner 5.

The slide l5 comprises a base plate I6 formed on the under side thereofand inwardly from its respective opposite end with grooves H toaccommodate the runners 5 as will be clear from a study of Figures 1, 5and 6.

Rising from the base plate H5 at its respective opposite ends andsuitably secured to the base plate l6 as at 18 are end plates l9 whichsupport therebetween a pair of rails 20. The rails 20 are secured attheir ends to the plates l9 as at 2|.

Mounted on the slide 15 for movement longitudinally therealong is acarriage indicated generally by the reference numeral 22.

The carriage 22 comprises a top plate or platform 23 to the under sideof which is secured as at 24 a relatively narrow block 25.

Secured to the block 25 at intervals as indicated at 26 are a pluralityof spaced bearing blocks including intermediate bearing blocks 21 andend bearing blocks 28. The bearing blocks 21 and 28 extend transverselyof the platform or plate 23 and the plate 25 and are provided in theirupper side with grooves 29 to accommodate the rails 20 of the slide l5as is perhaps best illustrated in Figure 6. p

Also the outer bearing blocks 28 are grooved on their outer side as at38 to accommodate the end plates l9 when the carriage 22 is moved to theextreme end of the slide l5.

Also on the under side thereof the bearing blocks 21 and 28 are groovedas at 3| to accommodate a plate 32 that is bolted or otherwise securedto the respective bearing blocks as at 33. Thus in this manner are thebearing blocks 21 and 28 fixedly secured relative to one another and thedesired spacing therebetween.

Journalled in each of the bearing blocks 21 is a shaft 34 whilejournalled in each-of the bearing blocks 28 is a shaft 35.

Each of the shafts 34, 35 is suitably provided, and in a manner as shownin-FigureG, at one end with a sprocket wheel 3'! and adjacent arelatively opposite end each shaft 34 is provided 42 that is alsotrained over the sprockets 36 on the shaft 34. Thus it will be seen thatdriveis transmitted simultaneously from the motor 48 to the shafts 34and from these shafts 34 to an adjacent shaft 35.

For shifting the slide l5 on the runners 5 and the carriage 22 on theslide l5 there is provided a single adjusting screw or threaded" shaft43.

The threaded shaft 43 at one end isiprovided g;

with an operating handle 44 and at its respective opposite end with asubstantially ball head 45';

For connecting thelast mentioned end to the shaft 46 either with theslide l5 orwith the carriage 22 there is provided a shank 46 having onone end thereof a socket 41 through the medium of which and a ball 45asuitable connection is provided between the'screw 43 and the shank 46.

For connecting the shank 46 with either end of the carriage 22 the topplate or platform 23 of said carriage is provided in therespective opposite end edges thereof with a slot 48 to receive the free end ofthe'shank 46'which endis apertured' to aline with alined openings 49}provided in the plate23 above and below each of theslots 48 whereby toaccommodate a coupling pin 58.

Further there is provided an internally threaded sleeve- 5lhaving''apertured attaching flanges 52 through the medium of which and pairs ofsockets 53 provided in-the upper end ofthe end plate l9 of slide I5thesleeve 5| may be secured on the upper edge of a selected end plate I 9,keeper pins 54 passing through the apertured flanges 52 and into thesocket 53 to positively secure the sleeve 5| on the selected end platel9. p

Thus it will be seen. that with the shank 46 connected with the carriage22 and the, sleeve 5! mounted on one of the end plates 16 as; for example shown in Figure; 1, the carriage 22 may be shifted lengthwisev tothe slide I 5 in, either direc tion by the turning of they screw 43inthe proper direction.

To utilize the screw 43,cshank 46 and sleeve,,5.|. for shifting theslide Il5. along the runners 5, the plate 1 is provided with a series ofrelatively spaced openings 55 through the medium of which and theaforementioned pins 5.4 the sleeve 5| may be secured in a detachablemanner' on the plate 1 at the desired adjustmena. f

Also one of the rails 28 is provided at intervals with slots 56 andintoa selected'one of saidslots the free end of the shank. 46 is passedantisecured through the mediumof the aforementioned coupling-pin 50, thesaid one rail 28? being provided above and below each of the. slots 56with alined' openings 51. Thus; for example; with .the screw 46connected as shown in dotted linesin Figure 11 to the slide I5, saidscrew maybe turned in either direction for advancing or re-,- tractingsaid slide l5. v

In using the machine resort is first had toithe coal cutting bits 51.The bits 51 are such as illustrated in Figure 12 being provided atoneend with' squared socket portion 58 through the shifted to thedesired position through the medium of the screw 43. When the carriage22 has thus been positioned at the desired adjustment the screw. 43 isconnected with the slide l5 for slowly feeding the slide l5 forwardly asthe cutting 'bit 5'! is worked into the coal.

After the boring operation is completed the bits 5'! are removed andconveyors such as shown in Figure 1-3 and indicated by the referencenumeral 59 are'substituted therefor. The conveyors 59 as shown in Figure13 are provided at one end with squared pocketed portions 68 with theattachment of the conveyors to the shafts 35. During the reaming of theholes previously bored. the slide I5 is advanced'by the turning of thescrew 43 and after the reaming operation. has been completed, screw 43is turnedin a. reverse direction for retracting the slide 15.

After a hole has been bored" the operation of cutting aslot or kerf isundertaken. end there are providedsaws EI' and conveying augers' 58hereinafter more fully referred to, the saws 6 l acting to cut the kerfor: slot andthe conveyors 59 acting to remove the cuttings resultingfrom the sawing operation, the conveying augers 59 trailing'the saws 6|,as is believed to be apparent.

As shown, each conveying auger 59 is provided at one end thereof with asocket 6.8'for engagement with one end of a shaft 35. v

Each of the saws ISL-as best shown in Figures 9 and 10, comprises ashank or core rod 62* on which are" disposed-in alternation circular sawblades 63 andraker disks '64,: the saw blades 63 and raker disks 64except for the outermost saw blade 63 and raker disk 64; are providedwith keys 65 that engage in a way or groove 66 in the shank or core rod62 forsecuringthe mentioned saw blades and raker disks onthe-shank orcore rod 62 to turntherewith.

The outermost saw blade 63and raker disk 64 are riveted or otherwisesecured together as at 61 and areprovided with threaded openings throughthe medium of which said outermost blade and raker disk are screwed, as'a unit, onto the threaded end 62a of the shank or core rod 62 as shownin Figure 9Q As a means of locki'ng th'e assembled outermost blade 63'and raker disk 64' asa unit on the shaft or core rod 62 there isprovided a lock screw 68 as shown in Figure 9 V The aforementioned blade63 and raker disk 64 are clampedon the shaft 62'between theaforeientioned innermost assembled blade 63 and raker disk 64 and a nut69 threaded on the large diameterof the shaft or core rod 62 as shown inFigure 9. The large diameter of the shaft or core rod 62 is providedwith a socket 18 through the medium of which the shaft or core rod isattached to the squa'redend 38 of a shaft 34.

From the abovei'twill be a; parent that after the initial boringoperation saws BI and conveyors 58 are brought into operation to cut thekerf, the saws cutting the kerf, and the conveyors, trailing the saws,conveying the cuttings out- To this wardly of the kerf as it is being soout. Obviously, to advance the saws BI and the trailing conveyors 59,carriage 22, through the medium of the screw 43, is moved lengthwisealong the slide 14. The conveyors 59 thus removing the cuttings from thekerf as it is being thus cut will prevent the saws from becomingclogged, thus insuring smooth operation of the saws during the cuttingoperation.

In connection with the use of the invention it may be further explainedthat when drilling into soft coal the rotary tool or tools 51 may be ofa diameter slightly larger than the diameter of the saws 6| so thatimmediately following the drilling operations performed by the rotarytool or tools 51 the saws 6| are brought into use for cutting the kerf.

On the other hand when cutting into hard coal it may be necessary to userotary tools such as tools 51 that are of relatively small diameter foraccomplishing the initial boring operation. Under such circumstance,after the boring by the tools 51 has been completed, conveyors 59 of adiameter slightly larger than the saws 6| are resorted to for reamingout the holes in a manner to enlarge the diameters thereof so that theholes will then be of a size to accommodate the saws BI which aresubsequently used for cutting the kerf.

From the above it will be seen that I am providing a machine for use incoal mining and that the same will function admirably for undercuttingthe coal.

What is claimed is:

1. In a mining machine of the character described, a slide adapted to bemounted on runners for shifting movement along the runners and relativethereto, said slide including a pair of rails, a carriage mounted on theslide and engageable with the rails to move therealong, a plurality oftool shafts rotatably mounted on the carriage and arranged in pairs,each of said tool shafts being provided at one end for the attachment ofa tool thereto, chain sprockets connecting the shafts of each pair, amotor mounted on the carriage, and chain and sprocket means connectingthe shaft of the motor with one shaft of each pair of shafts.

2. In a mining machine of the character described, a pair of runners, abar extending between and connected to the runners, longitudinallyextensible anchoring jacks having lower ends engaging said bar andrunners in a manner to secure the bar to the runners and to anchor therunners in set position in the mine, a slide mounted on and extendingbetween the runners, and a tool carriage mounted on the slide formovement therealong and in a direction at right angles to the directionof movement of the slide relative to the runners.

3. In a mining machine of the character described, a pair of runners, abar extending between and connected to the runners, longitudinallyextensible anchoring jacks having lower ends engaging said bar andrunners in a manner to secure the bar to the runners and to anchor therunners in set position in the mine, a slide mounted on and extendingbetween the runners, and a tool carriage mounted on the slide formovement therealong and in a direction at right angles to the directionof movement of the slide relative to the runners, and an adjusting screwadapted to be connected with the slide and the carriage for shifting thecarriage relative to the slide, and also adapted to be connected withsaid bar and the slide for shifting the slide relative to the runner.

4. In a mining machine of the character described, a pair of opposedrunners, a slide mounted on the runners for shifting movement toward andaway from the work, a carriage mounted on the slide to move in adirection at right angles to the movement of the slide, a saw and aconveying auger mounted on the carriage and extending laterally from oneside of the carriage in spaced parallelism, and means mounted on thecarriage and having driving connection with said saw and conveyor forsimultaneously rotating the saw and conveyor.

DAVID R. McCULLOUGI-I.

